100668047 has 4 divisors (see below), whose sum is σ = 100771440. Its totient is φ = 100564656.

The previous prime is 100667993. The next prime is 100668059. The reversal of 100668047 is 740866001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740866001 = 17 ⋅43580353.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100668047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100668097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50222 + ... + 52187.

It is an arithmetic number, because the mean of its divisors is an integer number (25192860).

Almost surely, 2^100668047 is an apocalyptic number.

100668047 is a deficient number, since it is larger than the sum of its proper divisors (103393).

100668047 is an equidigital number, since it uses as much as digits as its factorization.

100668047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103392.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 100668047 is about 10033.3467497142. The cubic root of 100668047 is about 465.1901900533.

The spelling of 100668047 in words is "one hundred million, six hundred sixty-eight thousand, forty-seven".